Accomplish the indicated achievement to get Gamerscore points:

Beginner Merchant: Clear Scenarios 4, 5, and 6.
Combination Ni Craftsman: Clear a scenario 300 times.
Combination Ni Doctor: Clear a scenario 500 times.
Combination Ni Fan: Clear a scenario 70 times.
Combination Ni Favorite: Clear a scenario 30 times.
Combination Ni Maniac: Clear a scenario 150 times.
Leading Merchant: Clear Scenarios 13, 14, and 15.
Learning Merchant: Clear Scenarios 1, 2, and 3.
Master Merchant: Clear all scenarios with an "S" rank.
Merchant Of The Doing Hand: Clear Scenarios 10, 11, and 12.
The Merchant One Ago: Clear Scenarios 7, 8, and 9.
Veteran Merchant: Clear all scenarios with an "A" rank.